about fullz and dumps

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what is this fullz?
hello guys I have questions about dumps
1- Can I withdraw money in another country ?
2- What should I pay attention to when buying a card?
3- The card has to be open abroad, right? for another country ( if its yes , how can I know this ? )
4- and all 2^^and 1^^ can work on atm for another country and card country ?